Back for photographic cameras.



Patented Nov. 13, I900.

H. M. REICHENBACH. BACK FOR PHOTOGRAPHIC CAMERAS.

!App1ication filed Feb. 26, 1900.)

(No Model.)

HENRY M. REICHENBACH, OF ROCHESTER, NEW YORK, ASSIGNOR TO THEREICHENBACH, MOREY & ILL COMPANY, OF SAME PLACE.

BACK FOR PHOTOGRAPHIC CAMERAS.

SPECIFICATION forming part of Letters Patent No. 661,891, dated November13, 1900.

Application filed February 26, 1900 Aerial No. 6,623. (No model.)

to all whom it may concern.- ing the links and springs and the backframe t Be it. known that I, HENRY M. REIOHEN- and the back will beunderstood from Fig. 8. EACH, a citizen of the United States, residing Iis a plate secured to the interior of the at. Rochester, New York, haveinvented an frame by the screws J and provided with Improved BackforPholographic Cameras, of openings near each end, which receive thewhich the following is a specification, referstuds F on the pivotedlinks C. The springs euce being bad to the accompanying draw- H arecoiled around the studs, and their ends ings. are bent inward andinserted in holes in the My in venlion relates to improvements in studs.(See K, Fig. 7.) The otherendsoft-he to the construction of the backs ofphotographic springs are extended inward and bear against cameraswhereby the same are adapted to pins or legs L on the plate I. Theselugs plate-holders or roll-holders. may be projections struck up fromthe metal My improvements are fully described and of the bar. Thesprings H give the links C illustrated in the following specificationand a constant tendency to swing inward toward 15 the accompanyingdrawings, the novel fea the back frame. A similar plate I is securedtures thereof being specified in the claims anby screws J to the back B,and the links C nexed to the said specification. C' are provided withsimilar studs F and In the accompanying drawings, representsprings H,which bear against lugs L, so that ing my improvements, Figure 1 is arear elethese linkshaveaconstanttemlency to swing 2:0 valion. Fig. 2 isa top view. Fig. 3 is a top toward the plate I. The links C C arepivview showing an ordinary double plate-holder oted together at theirmeeting ends by pins or in my improved back. Fig. 4B is a top viewscrews E. The range of movementof the pivshowing a roll-holder in use inmy improved oted links is sufficient to easily accommodate back. Fig. 5is an end view. Fig. 6 is a plan between the back-frameand the back theordi- 25 view showing the pivoted links. Fig. 7 is an nary double holderN, Fig. 3, or the thicker elevation of the same. Fig. 8 is a partialverroll-holder P, Fig. 4, of any suitable or pretical section on theline 8 8, Fig. 4. :ferred construction. Eitherofthese holders is Arepresents the back frame of a photofirmly securedin placeforthepurposeof makgraphic camera of any preferred style or coningexposures by the springs on the pivoted o struction and which frame maybe a part of links. On theend wheretheholderisinserted the cameraordetachabletherefrom,as shown. the front of the back is beveled tofacilitate B represents the back, which is connected the introduction ofthe holder, as indicated at to the back frame by pivoted links C C, noQ, Fig. 5. If made detachable from the camvided with springs, so thateither a plateera, the back-frameis provided withanysuit- 5 holder or aroll-holder may be employed. able projectingribs,grooves, or rabbetsfilling D is the ground glass, which is attached to correspondinggrooves, ribs, or rabbets on the back and used as a focusing-screen. Thethe permanent back frame of the camera to backisattachedtothe back framebythelinks exclude light in any ordinary or preferred C C, pivotedtogether at their inner ends E way. The holders and the back frame are40 and provided at theirouterends with the procorrespondingly fitted forthe same purpose jecting studsFand the spiralsprings H, which in anysuitable manner. The double linksC give the links a constant tendency toswing and C give suificient range of adjustment for i or fold toward theback frame and toward the the back, so as to admit the introduction of 1back, to which they are respectively pivoted. the relatively thickrollholder. The back l 45 As each pair of'links are-pivoted together atmay be provided with swinging flaps R R,

their inner ends, the result is that the back is which are opened forfocusing and serve to I drawn constantly toward the back frame withdispense with the ordinary dark cloth.

I a pressure sufficient to secure a plate-holder Iclaimorroll-holderthereon. The method of at-tach- 1. The combinationwith the rear frame of a camera of the jointed pivoted links and thesprings, said springs exerting upon said links a constant tendency tofold together against the rear of the camera, as and for the purposesset forth,

2. The combination with the rear frame of a camera, of the movable back,the jointed pivoted links, the springs and the plates, said springsexerting upon said links a constant tendency to fold together againstthe rear of the camera, as and for the purposes set forth.

3. The combination with a camera-body; and a movable rear frame; oflinks jointed loosely together in pairs, the links of each pair beingjointed to the can'ierabody and rear movable frame, respectively; andspringsact- HENRY M. REICI-IENBAOH.

itnesses:

GEORGE E. SELDEN, GEORGE S. HASTINGS.

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